Dubrovnik had these magnificent walls you could walk all the way around.

在那儿有着宏伟的城墙,环绕着整个城市

耶鲁公开课 - 欧洲文明课程节选

And this idea that the city is essentially analogous to the soul, that the city is like the soul, is the central metaphor around which the entire Republic is constructed.

而这种,将城市视为实质上可与灵魂比拟的概念，城市也有灵魂的概念，即是环绕整部《理想国》,构建的核心隐喻。

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